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Polymer film coated with a layer of silane coupling agent

a technology of silane coupling agent and polymer film, applied in the field of polymer film, can solve the problems of brittleness, easy torn, and easy to peel a polymer film, and achieve the effect of easy peeling, relatively easy peeling, and easy peeling

Active Publication Date: 2017-08-10
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a method for making a high-quality laminated body with no foreign matter between a polymer film and an inorganic substrate. The adhesive strength between the two can be made even by forming a well-adhering part and an easily peeled part. The inorganic substrate surface becomes smooth after peeling the polymer film, making it usable as a material for the laminated body with simple cleaning and the formation of a silane coupling layer. The invention also provides a reinforcing substrate for solar cells which have thin layers and are easy to crack. The use of a polymer film with high heat resistance is preferred for better bonding and element formation at higher temperatures. The invention is useful for production of flexible electronic devices formed on a film.

Problems solved by technology

Although an adhesive or a pressure sensitive adhesive used for bonding a polymer film is also required to have sufficient heat resistance, polymer films which can stand practical use in the high temperature range are limited as actual problems, and presently, there is no conventional adhesive or pressure sensitive adhesive for bonding, which has sufficient heat resistance.
However, a polymer film obtained by the foregoing means is brittle and easy to be torn, so that the functional element may be often broken when the film is peeled from the inorganic substrate.
Particularly, peeling of a large surface device is so extremely difficult that it is not possible to achieve an industrially satisfactory yield.
The document concerns only the adhesion of polymer films, and does not perform control of the adhesion and peeling power of the coupling agent itself by UV light irradiation.

Method used

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  • Polymer film coated with a layer of silane coupling agent
  • Polymer film coated with a layer of silane coupling agent
  • Polymer film coated with a layer of silane coupling agent

Examples

Experimental program
Comparison scheme
Effect test

examples

[0178]Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited by the following examples. The methods of evaluating physical properties in the following examples are as follows.

1. Reduced Viscosity (ηsp / C) of Polyamic Acid

[0179]A solution prepared by dissolving a polymer in N-methyl-2-pyrrolidone (or N,N-dimethylacetamide) so that the polymer concentration became 0.2 g / dl was measured at 30° C. with an Ubbelohde type viscosity tube (when the solvent used for the preparation of the polyamic acid solution was N,N-dimethylacetamide, a polymer was dissolved in N,N-dimethylacetamide and the reduced viscosity was measured).

2. Thickness of Polyimide Film or the Like

[0180]The thickness was measured using a micrometer (manufactured by Feinpruf, Millitron 1245D).

3. Tensile Elastic Modulus, Tensile Breaking Strength, and Tensile Breaking Elongation of Polyimide Film

[0181]One prepared by cut...

production examples 1 and 2

(Preparation of Polyamic Acid Solutions A1 and A2)

[0220]After the inside of a reaction container equipped with a nitrogen introduction tube, a thermometer and a stirring rod was replaced with nitrogen, 223 parts by mass of 5-amino-2-(p-aminophenyl)benzoxazole and 4416 parts by mass of N,N-dimethylacetamide were added thereto and completely dissolved. Then, 217 parts by mass of pyromellitic acid dianhydride and SNOWTEX prepared by dispersing colloidal silica in dimethylacetamide (DMAC-ST30, manufactured by Nissan Chemical Industries, Ltd.) in an amount that the silica content becomes the content described in Table 1 were added thereto. The liquid was stirred at a reaction temperature of 25° C. for 24 hours, and then each of brown viscous polyamic acid solutions A1 and A2 was obtained.

TABLE 1ProductionProductionunitExample 1Example 2Polyamic acid solutionA1A2Kind of slip agentsilica—Particle size of slip agentμm0.08—Addition amount of slip agent% by mass0.350  Reduced viscosity η sp / C...

production examples 3 and 4

(Preparation of Polyamic Acid Solutions B1 and B2)

[0221]After the inside of a reaction container equipped with a nitrogen introduction tube, a thermometer and a stirring rod was replaced with nitrogen, 398 parts by mass of 3,3′,4,4′-biphenyltetracarboxylic acid dianhydride as a tetracarboxylic acid dianhydride and 147 parts by mass of paraphenylenediamine were dissolved in 4600 parts by mass of N,N-dimethylacetamide. Then, SNOWTEX prepared by dispersing colloidal silica in dimethylacetamide (DMAC-ST30, manufactured by Nissan Chemical Industries, Ltd.) in an amount that the silica content becomes the content described in Table 2 was added thereto. The liquid was stirred at a reaction temperature of 25° C. for 24 hours, and then each of brown viscous polyamic acid solutions B1 and B2 was obtained.

TABLE 2ProductionProductionunitExample 1Example 2Polyamic acid solutionB1B2Kind of slip agentsilica—Particle size of slip agentμm 0.08—Addition amount of slip agent% by mass0.40  Reduced visc...

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Abstract

It is provided that a polymer film; a preparation method of the polymer film; and a laminated body used the polymer film. The polymer film is suitable for use in producing a laminate body which comprises a support and a polymer film, and is reduced in foreign-matter trapping and which can be used for supplying film devices using conventional apparatuses for glass substrates or silicon substrates. The polymer film coated with the layer of silane coupling agent, which is suitable for producing a laminate that comprises a support and a polymer film, comprises a silane coupling agent layer formed on at least one surface of the polymer film, wherein the silane coupling agent layer has a three-dimensional surface roughness (Sa) of 5.0 nm or less. The method of efficient for producing the polymer film coated with the above layer is the method for producing without using a vacuum.

Description

TECHNICAL FIELD[0001]The present invention relates to a polymer film suitable for producing a laminated body including a polymer film and a support, more particularly, to a polymer film which is capable of preparing a laminated body having heat resistance and which is suitable for preparing a film device including a laminated body in order to obtain a laminated body produced by, at the time of forming a device that is formed of a thin film of a semiconductor element, an MEMS element, a display element, or the like and that requires fine processing on a polymer film surface, temporarily or semi-permanently bonding a polymer film to a support made from an inorganic substance; a preparation method of the polymer film; a laminated body including the polymer film prepared by the method; and a flexible electronic device prepared by using the laminated body.BACKGROUND ART[0002]As electronic components in information communication equipment (e.g., broadcast equipment, mobile radios, portabl...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B9/04H01L21/683B32B37/10C08J7/043
CPCB32B9/04B32B37/10B32B2255/20B32B2457/00H01L21/6836B32B27/34C08J7/00Y02P20/582C08J7/065C08J2379/08C08J7/043C03C17/38C03C17/32B32B7/022B32B27/16B32B27/281B32B2307/538B32B2310/0837
Inventor OKUYAMA, TETSUOWATANABE, NAOKIKOBAYASHI, ISSEITSUCHIYA, TOSHIYUKIMAEDA, SATOSHI
Owner TOYOBO CO LTD
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